refresh

问题 Problem is: Clock hands in Tkinter flashes because I use w.delete , but if i don't use it then clock hands duplicate.. Please help. import Tkinter as tk; import time from math import cos,sin,pi import sys root=tk.Tk(); root.title("Clock") w = tk.Canvas(root, width=320, height=320, bg="#456", relief= "sunken", border=10) w.pack() size=300 def funA(): s=time.localtime()[5] m=time.localtime()[4] h=time.localtime()[3] w.update() degrees = 6*s angle = degrees*pi*2/360 ox = 165 oy = 165 x = ox +

问题 In my app when user clicks on the ADD menu button, a listview appears populated with items that are loaded from a text file. So now user can add one more item to the listview. After adding it to an array, the new item is written out to the text file, but does not get into the listview, as i want to do it by reading the file to an array then populate the ListView with it. Problem is that this is not working. The arrayadapter populating is in the onCreate(Bundle savedInstanceState) {} method,

问题 I have a commandButton that will invoke a function to download a file (standard stuffs like InputStream , BufferedOutputStream ...) After download success, at the end of the function, I change some values of the current object and persist it into database. All of these work correctly. Now when file is done downloading, the content of the page is not updated. I have to hit refresh for me to see updated content. Please help. Below are the basic structure of my code document : Managed Bean

问题 I know this is not recommended, but I need it because I have an iframe inside the page who has the actual content and I want that when the users hits refresh button, iframe reloads not entire page. I know I have to call onunload / onbeforeunload event, but I don't want to ask me if I want to leave the window, just don't. Is that possible? I've got handled the F5 key, but I like to prevent refreshing from button too. 回答1: UPDATE: I wrote this 5 years ago, browsers do different stuff now, you

问题 i'm making a "memorie" game with javafx 1.3. (I'm not really good in English but i will try it.) The main question is, how can I reload a scene after a scene change. And with reload I mean the code will be done again. Because I've four scenes, and all the scenes stay on false but the scene I show stays on true. But one of the scenes have to reload again to make the game right. So The game has 16 rectangles wich are closet, underneath them there are 8 different pictures from every are twice.

问题 i'm making a "memorie" game with javafx 1.3. (I'm not really good in English but i will try it.) The main question is, how can I reload a scene after a scene change. And with reload I mean the code will be done again. Because I've four scenes, and all the scenes stay on false but the scene I show stays on true. But one of the scenes have to reload again to make the game right. So The game has 16 rectangles wich are closet, underneath them there are 8 different pictures from every are twice.

问题 i'm making a "memorie" game with javafx 1.3. (I'm not really good in English but i will try it.) The main question is, how can I reload a scene after a scene change. And with reload I mean the code will be done again. Because I've four scenes, and all the scenes stay on false but the scene I show stays on true. But one of the scenes have to reload again to make the game right. So The game has 16 rectangles wich are closet, underneath them there are 8 different pictures from every are twice.

问题 I coded a pretty basic jquery slider, I have a seconds variable which I use to customize the seconds it takes to switch between images. My problem is changing the seconds only takes effect when the slider is running (pause button not clicked), I would like itto instantly update instead of having to pause the slider, change the seconds variable and hitting play again. How could I approach this, I feel like it's a fairly easy task but I am kind of a js newbie. Here is the code: $(document)

问题 I have a CheckBox in my TabPage on my Form, if I select the checkBox, the value is saved in a Table field (present in my FormDataSource: ParametersTable). I want to refresh the form when I enter in TabPage, just Like pressing F5. Is it possible? 回答1: There is a great article about different methods of refreshing the form's data here. Here are the basic outline: 1. Refresh This method basically refreshes the data displayed in the form controls with whatever is stored in the form cache for that

问题 I'm changing the colour of the background when a button is clicked with Javascript. This is the JS code: <script> function myFunction() { document.body.style.backgroundColor = "#BB0A21"; } </script> It works fine, but the problem is that when the user refreshes the page, the background colour is being reset to the original colour. Is there a way to stop this from happening? Thanks, Lisa 回答1: You have to store the color value in Client side Cookie or Server Side Session. Modern browsers